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Human Bio Exam Revision questions well answered to pass
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Human Bio Exam Revision questions well answered to pass
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Human Bio Exam RevisionRespiratory System - correct answer ✔✔The system specialized for the intake of oxygen and removal of
carbon dioxide.
Pleura - correct answer ✔✔A membrane covering the surface of the lungs
Pleural fluid - correct answer ✔✔A thin layer of fluid within the pleura that allows the lungs to move
during breathing.
Bronchiole - correct answer ✔✔A very small air tube in the lung
Alveoli - correct answer ✔✔Air sacs in the lung
Ventilation - correct answer ✔✔Breathing
Inspiration - correct answer ✔✔Inhalation
Expiration - correct answer ✔✔Exhalation
Circulatory system - correct answer ✔✔The transporting system of the body; consists of the heart,
blood, blood vessels, lymph and lymph vessels.
Plasma - correct answer ✔✔The fluid part of the blood in which the cells are suspended.
Formed elements - correct answer ✔✔Any cell or cell-like structure in the blood.
Red blood cells (Erythrocytes) - correct answer ✔✔One of the formed elements of the blood; contains
haemoglobin.
,White blood cells (Leucocytes) - correct answer ✔✔One of the formed elements; contains a nucleus but
no haemoglobin.
Platelets (Thrombocytes) - correct answer ✔✔A fragment of cytoplasm enclosed in a membrane but
lacking a nucleus.
Haemoglobin - correct answer ✔✔It is involved in the transport of oxygen and some carbon dioxide.
Oxyhaemoglobin - correct answer ✔✔Oxygen combined with haemoglobin.
Oxygenated blood - correct answer ✔✔Blood containing a lot of oxygen.
Deoxygenated blood - correct answer ✔✔Blood that contains little oxygen.
Carbaminohaemoglobin - correct answer ✔✔Combination of carbon dioxide and haemoglobin.
Heart - correct answer ✔✔A hollow, muscular organ that pumps blood.
Pericardium - correct answer ✔✔A membrane that encloses the heart.
Cardiac muscle - correct answer ✔✔Wall of the heart.
Capillaries - correct answer ✔✔Microscopic blood vessels which links arterioles and venules.
Veins - correct answer ✔✔A blood vessel that carries blood towards the heart.
Arteries - correct answer ✔✔Blood vessels that carry blood away from the heart.
, Circulation - correct answer ✔✔The movement of blood throughout the heart and blood vessels.
Atrioventricular valves - correct answer ✔✔Ensures that blood flows in one direction only; prevents
backflow of blood from the ventricles into the atria.
Semilunar valves - correct answer ✔✔Prevents blood from falling back into the ventricles.
Cardiac cycle - correct answer ✔✔The cycle of events that occur in one complete heartbeat.
Systole - correct answer ✔✔The period when heart muscles relax.
Diastole - correct answer ✔✔The period of relaxation in the heart (between contractions) during which
it fills with blood.
Atrial systole - correct answer ✔✔Contraction of the atria
Ventricular systole - correct answer ✔✔Ventricles contract
Vasoconstriction - correct answer ✔✔A decrease in the diameter of blood vessels, reducing blood flow
Blood clotting (coagulation) - correct answer ✔✔Formation of a blood clot.
Fibrin - correct answer ✔✔An insoluble protein in the form of threads; form blood clots by holding blood
cells, platelets and plasma together in a mesh.
Clot - correct answer ✔✔Blood cells, platelets and plasma trapped together in a mesh of fibrin.
Clot retraction - correct answer ✔✔Contraction of the fibrous threats of a blood clot.
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